21270272

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{4373}}^1$

素因数の和:4408

約数の個数: 36

約数和(自身を含む): 44702280

約数和(自身を除く): 23432008

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 608, 1216, 2432, 4373, 4864, 8746, 17492, 34984, 69968, 83087, 139936, 166174, 279872, 332348, 559744, 664696, 1119488, 1329392, 2658784, 5317568, 10635136, 21270272]

約数ペア:

[(1, 21270272), (2, 10635136), (4, 5317568), (8, 2658784), (16, 1329392), (19, 1119488), (32, 664696), (38, 559744), (64, 332348), (76, 279872), (128, 166174), (152, 139936), (256, 83087), (304, 69968), (608, 34984), (1216, 17492), (2432, 8746), (4373, 4864)]